%0 Journal Article
%@ 18650929
%A Khan, M.I.
%A Jeoti, V.
%A Malik, A.S.
%C Jeju Island
%D 2010
%F scholars:1013
%J Communications in Computer and Information Science
%K JPEG; Multimedia Commerce; Multimedia security; Perceptual Encryption; Scrambling, Commerce; Computer graphics; Cosine transforms; Degradation; Digital image storage; Discrete cosine transforms; Image quality; Internet protocols; Multimedia signal processing; Network security; Pattern recognition; Signal processing, Cryptography
%P 212-223
%R 10.1007/978-3-642-17641-8₂₆
%T On perceptual encryption: Variants of DCT block scrambling scheme for JPEG compressed images
%U https://khub.utp.edu.my/scholars/1013/
%V 123 CC
%X In this paper, a perceptual encryption scheme based on scrambling of DCT blocks in JPEG compressed images and its variants are proposed. These schemes are suitable for the environment where perceptual degradation of the multimedia content is required. The security of these techniques is shown to be sufficient against casual attacks. These discussed schemes are kept as light as possible in order to keep the encryption overhead and cost low. Also, an investigation in the progressive degradation of image by increasing the number of the DCT blocks to be scrambled has been carried out. The quality of the degraded multimedia content is measured with objective image quality assessment (IQA) metrics such as SSIM, MS-SSIM, VIF, VIFP and UQI. These IQA metrics provide choice for the selection of control factor. © 2010 Springer-Verlag.
%Z cited By 9; Conference of 2010 International Conferences on Signal Processing, Image Processing and Pattern Recognition, SIP 2010 and Multimedia, Computer Graphics and Broadcasting, MulGraB 2010, Held as Part of FGIT 2010 ; Conference Date: 13 December 2010 Through 15 December 2010; Conference Code:83305